Hooked the trace event argument whitelist up to the background_trace_manager

content/browser/tracing/background_tracing_manager_impl.h

Index: content/browser/tracing/background_tracing_manager_impl.h
diff --git a/content/browser/tracing/background_tracing_manager_impl.h b/content/browser/tracing/background_tracing_manager_impl.h
index fd1fd00ad9e4fe147d0861e37c1327448ab6b53b..1093ba614b6d4af09c26e481de43d0a986bf03d1 100644
--- a/content/browser/tracing/background_tracing_manager_impl.h
+++ b/content/browser/tracing/background_tracing_manager_impl.h
@@ -21,7 +21,7 @@ class BackgroundTracingManagerImpl : public content::BackgroundTracingManager {
 
   bool SetActiveScenario(scoped_ptr<BackgroundTracingConfig>,
                          const ReceiveCallback&,
-                         bool) override;
+                         DataFiltering data_filtering) override;
   void WhenIdle(IdleCallback idle_callback) override;
 
   void TriggerNamedEvent(TriggerHandle, StartedFinalizingCallback) override;
@@ -29,6 +29,8 @@ class BackgroundTracingManagerImpl : public content::BackgroundTracingManager {
   void GetTriggerNameList(std::vector<std::string>* trigger_names) override;
 
   void InvalidateTriggerHandlesForTesting() override;
+  void SetTracingEnabledCallbackForTesting(
+      const base::Closure& callback) override;
 
  private:
   BackgroundTracingManagerImpl();
@@ -74,6 +76,7 @@ class BackgroundTracingManagerImpl : public content::BackgroundTracingManager {
   int trigger_handle_ids_;
 
   IdleCallback idle_callback_;
+  base::Closure tracing_enabled_callback_for_testing_;
 
   friend struct base::DefaultLazyInstanceTraits<BackgroundTracingManagerImpl>;